# At DocuWriter.ai, the documentation will make you smile:) > Source: > Published: 2026-07-16 08:37:24+00:00 DocuWriter is an **AI code documentation tool** that connects to your repository and generates a full book-style documentation tree from your source code: **code documentation, API documentation, and UML diagrams**. It keeps everything in sync as your code evolves. No MDX. No prose to maintain. No documentation team required. "We inherited a 12-year-old codebase and nobody knows how it works anymore." – every engineering team ever "Our docs are so stale that nobody trusts them. We just ask the senior engineer." – the senior engineer who is tired "We're onboarding eight new hires next quarter and they can't find anything." – the head of engineering writing this on a flight GitHub, GitLab (incl. self-hosted), Bitbucket, Azure DevOps. **OAuth or PAT. Two clicks.** We analyze your codebase with **AST parsing and a code-aware retrieval pipeline**, not an LLM editing prose. The result is a complete, hierarchical documentation tree grounded in your actual source. Edit anything in our editor. Publish to a private team space or a public-facing site. **Autopilot watches your repo** and opens reviewable update suggestions every time the code changes. The five reasons our customers actually buy. "We bought / merged / inherited 12 years of code with no docs." "New hires spend their first month asking the same questions." "The auditor wants architecture, API, and module documentation by Friday." "We're handing this codebase to a partner / acquirer / new team." Trusted by engineering teams at Most documentation tools assume you'll write everything yourself and remember to keep it updated. **You won't. Nobody does.** DocuWriter's Autopilot is the **AI documentation tool** that watches your connected repositories. When code changes (every push, every merged PR) it reviews the diff, identifies which documents are now wrong, and opens a reviewable suggestion. This is real **automatic code documentation**: **Approve, discard, or edit** before anything is published. Notifications go to Slack, Teams, Google Chat, or your custom webhook. Auto-apply rules let you skip review for low-risk doc-only edits. High-confidence suggestions can be applied automatically; sensitive ones always wait for a human. `AuthService.refresh()` signature changed: 2 docs affected New endpoint `POST /v2/billing/invoices` : add to API Reference `RetryPolicy` renamed to `BackoffStrategy` : update 4 references Architecture diagram may be stale: 3 new modules detected Possible deprecation: `useLegacyClient` . Last used 6 months ago Complete book-style docs for entire repos. OpenAPI / Swagger / Postman from your code. Class and sequence diagrams (Mermaid / PlantUML). Advanced for professionals. Unlock the full potential. Unlimited potential for your business. Looking for something lighter? [Start with the Starter plan](https://app.docuwriter.ai/register?plan=starter): 50 credits/mo for $20/mo. Yearly billing available with **4 free months**. Need SSO, self-hosted runtime, or custom volume? [Talk to us about a Custom plan →](/enterprise#enterprise-hero) DocuWriter generated docs across 100+ repositories in 5 weeks. Manually documenting everything would have taken about six months. Every DocuWriter space publishes as an MCP server with 70+ tools, plus `llms.txt` and `llms-full.txt` by default. Cursor, Claude, ChatGPT, and any MCP client can read, search, and update your documentation natively. No extension required.